Found 3 alternatives for PE45361A-X by pSemi. Rf Misc Ics And Modules — 12-UFQFN Exposed Pad.
RF POWER LIMITER 2GHZ 50W 12QFN
RF DTC 100MHZ-3GHZ 12QFN
RF POWER LIMITER 6GHZ 50W 12QFN